Download Producing new cells - Clydebank High School

UNIT 1 CELL BIOLOGY 3. PRODUCING NEW CELLS Q. What is the purpose of cell division?
A. to increase the number of cells
NATIONAL 5 Q. What happens to the number of
chromosomes during mitosis going from
the parent cell to daughter cells?
A. the number of chromosomes stays
Q. Why do single celled organisms need
the same
to carry out cell division?
A. to reproduce
Q. What is meant by the chromosome
compliment of a cell?
Q. Why do multicellular organisms need
to carry out cell division?
A. the number of chromosomes it has
present
A. for growth and repair
Q. What are genes?
Q. What is the name of the type of cell
A. the basic units of inheritance
division used by animals and plants to
grow?
A. mitosis
Q. Where are genes found?
A. on chromosomes
Q. What organelle (cell structure)
control cell division in plant and animal
cells?
Q.
What are chromosomes made of?
A. DNA
A. nucleus
Q. What do we call a cell that has two
Q. What do we call the original cell
that divides?
sets of chromosomes?
A. diploid
A. parent cell
Q. What do we call sets that have only
Q. What is the name given to the two
new cells that are formed?
A. daughter cells
one set of chromosomes
A. haploid
UNIT 1 CELL BIOLOGY 3. PRODUCING NEW CELLS NATIONAL 5 Q. Which type of animal cells are
A. a liquid medium for growing
haploid?
microorganisms in a test tube or flask
A. gametes (sex cells)
Q. What is agar jelly?
Q. Outline the main stages of mitosis.
A. 1. Chromosomes replicate and
shorten and thicken becoming visible as
A. a solid medium that contains the
nutrients needed for growing
microorganisms in a petri disch
pairs of chromatids
2. Spindle fibres form and chromosomes
Q. What typical conditions are needed
line up at equator of cell
for culturing microorganisms?
3. Spindle fibres attach to
A. oxygen, suitable temperature,
chromosomes at centromere
suitable pH and culture medium
4. Spindle fibres pull chromatids to
opposite poles of cell
5. New nuclear membrance forms round
chromosomes and cytoplasm divides
Q. Where might be large quantities of
a culture be grown?
A. in a fermenter
6. Two new daughter cells are formed.
Q. What is meant by sterile conditions?
Q. What is a cell culture?
A. removal of cells from an animal or
A. the absence of any unwanted
microorganisms
plant to be grown in an artificial
environment
Q. What is contamination?
Q. What is meant by a growth medium?
A. the presence of any unwanted
microorganisms in a culture
A. a solid or liquid that microorganisms
can be grown on because it contains all
the nutrients needed for growth
Q. What are aseptic techniques?
A. techniques that are used to prevent
Q. What is a nutrient broth?
the spread of unwanted microorganisms
UNIT 1 CELL BIOLOGY 3. PRODUCING NEW CELLS Q. List some examples of aseptic
techniques used in a lab
A. disinfection of working areas, use of
flames to kill bacteria which might
enter vessels, flame inoculating loop,
wear a lab coat, tape petri dish closed,
autoclave equipment, wash hands before
and after handling microorganisms, wear
gloves
NATIONAL 5